Evidence map›Paper›PMID 19741089›Full record

ArticleJournal of clinical microbiology2009

Direct 16S rRNA gene sequencing from clinical specimens, with special focus on polybacterial samples and interpretation of mixed DNA chromatograms.

Oyvind Kommedal, Kristine Kvello, Rune Skjåstad, Nina Langeland, Harald G Wiker

Abstract read
In one paragraph

Article in Journal of clinical microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

35 citing papers in PubMed.

  1. ASM case reports · 2025
    Article
  2. Article
  3. Nationwide multicentre study of Nanopore long-read sequencing for 16S rRNA-species identification.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. Frontiers in cellular and infection microbiology · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Bacteraemia withAccess microbiology · 2020
    Article
  12. The bacteriology in adult patients with pneumonia and parapneumonic effusions: increased yield with DNA sequencing method.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2019
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Oyvind KommedalDepartment of Microbiology and Immunology, Haukeland University Hospital, Paradisleitet 12, 5231 Paradis, Bergen, Norway. oyvind.kommedal@isentio.com
Kristine Kvello
Rune Skjåstad
Nina Langeland
Harald G Wiker

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

RipSeq (iSentio, Bergen, Norway) is a web-based application for the analysis of mixed DNA chromatograms. It opens the possibility to analyze chromatograms obtained by direct 16S rRNA gene sequencing from polybacterial human clinical samples. In this study, we used direct 16S rRNA gene sequencing to investigate 264 samples from a wide range of suspected human bacterial infections. The sequence-based identification was compared with the results from routine culture-based identification. A total of 151 samples were positive by the first PCR, producing 85 pure and 66 mixed DNA chromatograms. All mixed chromatograms were analyzed by RipSeq, although seven were so complex that only the dominant bacterial sequences could be identified. In general, sequence-based identification detected a larger number of species than did culture for samples from patients who had received antibiotics prior to sample collection and for samples containing anaerobic bacteria. RipSeq made it possible to apply this supplementary diagnostic tool to typical polybacterial specimens, such as internal abscesses, pleural fluids, and bile.

Indexed as

BacteriaBacterial InfectionsDNA, BacterialDNA, RibosomalHumansInternetNorwayRNA, Ribosomal, 16SSequence Analysis, DNAStatistics as TopicDNA, BacterialDNA, RibosomalRNA, Ribosomal, 16S

Identifiers

PMID19741089
PMCPMC2772595

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.